Use one example here to illustrate my understanding of "fixed fairshare", if ABC queue is define with "minResoures == 100; maxResoures == 100; weight == 0", we will have a fixed queue allocated 100 memory, not participating in instantanous fairshare (IFS); that is, (1) even when ABC queue is empty, its share of 100 memory will not be allocated to other active queue thru IFS; and (2) when ABC queue is not empty, it will not grab IFS shares from other empty queues.